tests: Mark functional tests not supporting bitcoin-cli (--usecli) as such

test/functional/interface_rest.py

@@ -44,6 +44,7 @@ class RESTTest (BitcoinTestFramework):
         self.setup_clean_chain = True
         self.num_nodes = 2
         self.extra_args = [["-rest"], []]
+        self.supports_cli = False
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()